Anonymous Coward
Veteran Member
User Feipoa, NJRoadFan and myself have been attempting to build an adapter that allows a PS/2 mouse to connect to AT type machines without native support for such.
We have already tested and built said adapter. My version of it actually sandwiches in between the 8042 and the 40-pin DIP socket, and has been verfied working on machines based on the AWARD BIOS.
This is largely possible because tools such as MODBIN are available that allow us to enable hidden options (such as PS/2 support).
AMI Hi Flex BIOSes also support PS/2 mice, and at one time there was also a tool available called AMIBCP that was functionally equivilant to modbin that would allow us to enable it. Unfortunately, these old versions of AMIBCP no longer seem to exist (at least they are not available online).
The versions needed are as follows:
BCP14.EXE (for core BIOS 07/07/91)
BCP20.EXE (for core BIOS 12/12/91)
BCP21.EXE (for core BIOS 06/06/92) <-----I especially want this one
BCP21A.EXE (for core BIOS 11/11/92 and 08/08/93)
We have tried to modify the machine code directly, but AMIBIOS uses a checksum to ensure data integrity and/or prevent reverse engineering. Is there anyone on this forum that would be able to build a tool to recalculate the checksum on a modded BIOS image?
We have already tested and built said adapter. My version of it actually sandwiches in between the 8042 and the 40-pin DIP socket, and has been verfied working on machines based on the AWARD BIOS.
This is largely possible because tools such as MODBIN are available that allow us to enable hidden options (such as PS/2 support).
AMI Hi Flex BIOSes also support PS/2 mice, and at one time there was also a tool available called AMIBCP that was functionally equivilant to modbin that would allow us to enable it. Unfortunately, these old versions of AMIBCP no longer seem to exist (at least they are not available online).
The versions needed are as follows:
BCP14.EXE (for core BIOS 07/07/91)
BCP20.EXE (for core BIOS 12/12/91)
BCP21.EXE (for core BIOS 06/06/92) <-----I especially want this one
BCP21A.EXE (for core BIOS 11/11/92 and 08/08/93)
We have tried to modify the machine code directly, but AMIBIOS uses a checksum to ensure data integrity and/or prevent reverse engineering. Is there anyone on this forum that would be able to build a tool to recalculate the checksum on a modded BIOS image?